webserver动态调用类
一、异步调用:
1 try 2 { 3 svrMonitor sm = new svrMonitor(); 4 sm.Url = sm.Url; 5 sm.GetRecordsCompleted += new GetRecordsCompletedEventHandler(GetRecordsCompleted); 6 sm.GetRecordsAsync(); 7 } 8 catch (Exception ex) 9 { 10 //异常不会出现在这里的哦 11 MessageBox.Show("无法连接到服务器",可能网络异常或服务未启动 。", "系统提示"); 12 } 13 14 void GetRecordsCompleted(object sender, GetRecordsCompletedCompletedEventArgs e) 15 { 16 try 17 { 18 //dosomeing 19 } 20 catch (Exception ex) 21 { 22 //注意 :异常是在这里捕捉到的。 23 MessageBox.Show("无法连接到服务器",可能网络异常或服务未启动 。", "系统提示"); 24 } 25 26 }
动态调用类:
1 private void Page_Load(object sender, System.EventArgs e) 2 { 3 // 在此处放置用户代码以初始化页面 4 object obj = InvokeWebservice("http://localhost/getPro.asmx","EtoonProduct.web.manage","getPro","getArea",new object[]{"1"}); 5 this.DataGrid1.DataSource=obj; 6 this.DataGrid1.DataBind(); 7 } 8 /**//// 根据指定的信息,调用远程WebService方法 9 /// 10 /// WebService的http形式的地址 11 /// 欲调用的WebService的命名空间 12 /// 欲调用的WebService的类名(不包括命名空间前缀) 13 /// 欲调用的WebService的方法名 14 /// 参数列表 15 /// WebService的执行结果 16 /// 17 /// 如果调用失败,将会抛出Exception。请调用的时候,适当截获异常。 18 /// 异常信息可能会发生在两个地方: 19 /// 1、动态构造WebService的时候,CompileAssembly失败。 20 /// 2、WebService本身执行失败。 21 /// 22 /// 23 /// 24 /// object obj = InvokeWebservice("http://localhost/GSP_WorkflowWebservice/common.asmx","Genersoft.Platform.Service.Workflow","Common","GetToolType",new object[]{"1"}); 25 /// 26 /// 27 private object InvokeWebservice(string url, string @namespace, string classname, string methodname, object[] args) 28 { 29 try 30 { 31 System.Net.WebClient wc = new System.Net.WebClient(); 32 System.IO.Stream stream = wc.OpenRead(url+"?WSDL"); 33 System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream); 34 System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter(); 35 sdi.AddServiceDescription(sd,"",""); 36 System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace); 37 System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit(); 38 ccu.Namespaces.Add(cn); 39 sdi.Import(cn,ccu); 40 41 Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider(); 42 System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler(); 43 44 System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.CompilerParameters(); 45 cplist.GenerateExecutable = false; 46 cplist.GenerateInMemory = true; 47 cplist.ReferencedAssemblies.Add("System.dll"); 48 cplist.ReferencedAssemblies.Add("System.XML.dll"); 49 cplist.ReferencedAssemblies.Add("System.Web.Services.dll"); 50 cplist.ReferencedAssemblies.Add("System.Data.dll"); 51 52 System.CodeDom.Compiler.CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu); 53 if(true == cr.Errors.HasErrors) 54 { 55 System.Text.StringBuilder sb = new System.Text.StringBuilder(); 56 foreach(System.CodeDom.Compiler.CompilerError ce in cr.Errors) 57 { 58 sb.Append(ce.ToString()); 59 sb.Append(System.Environment.NewLine); 60 } 61 throw new Exception(sb.ToString()); 62 } 63 System.Reflection.Assembly assembly = cr.CompiledAssembly; 64 Type t = assembly.GetType(@namespace+"."+classname,true,true); 65 object obj = Activator.CreateInstance(t); 66 System.Reflection.MethodInfo mi = t.GetMethod(methodname); 67 return mi.Invoke(obj,args); 68 } 69 catch(Exception ex) 70 { 71 throw new Exception(ex.InnerException.Message,new Exception(ex.InnerException.StackTrace)); 72 } 73 }
作者:划风
邮箱:emaisi@hotmail.com
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